Transparent Labs makes several different pre-workouts
“Transparent Labs pre-workout” describes a product family, not one universal formula. BULK, Bulk Black, LEAN and Stim-Free have separate ingredient panels. Their similar white tubs and shared branding make the full product name especially important when comparing a review with the item in your cart.
Four formulas, four label checks
- BULK: The reviewed Blue Raspberry panel lists one 20.8 g scoop, 30 servings, 200 mg PurCaf caffeine, 8 g citrulline malate 2:1, 4 g beta-alanine and 2.5 g betaine anhydrous.
- Bulk Black: The displayed Peach Mango panel lists one 20.8 g scoop and 325 mg PurCaf caffeine. It also shows 8 g citrulline malate, 4 g beta-alanine and 2 g L-tyrosine. This is a distinct higher-caffeine formula.
- LEAN: The Strawberry Lemonade panel uses a 14.2 g scoop. It lists 180 mg caffeine, 6 g citrulline malate, 2 g beta-alanine and 1 g acetyl-L-carnitine HCl. The manufacturer markets it for cutting; that positioning is not a guarantee of weight loss.
- Stim-Free: This separately named product is presented without caffeine or other stimulants. Its ingredient overview lists 8 g citrulline malate, 4 g beta-alanine, 2.5 g betaine and 150 mg elevATP. It is not simply a smaller serving of BULK.
Why the label takes priority over an old review
The Bulk Black page contains conflicting copy: its FAQ gives 350 mg caffeine, while the reviewed Peach Mango label shows 325 mg PurCaf. Other text mentions Infinergy, which is absent from that displayed panel. These details should not be combined into an invented formula. Check the label on the exact flavor and container you will receive.
Citrulline malate also should retain its full ingredient name and ratio. An 8 g entry for citrulline malate 2:1 is not an 8 g declaration of plain L-citrulline. Keep compound amounts and active-ingredient percentages separate elsewhere on the panel too.
Choose using the details you can verify
Start with caffeine content, serving weight, disclosed ingredients and the package warnings. Compare the cost at the serving you intend to use. The pictured LEAN tub illustrates one member of the range; its panel does not describe BULK, Black or Stim-Free. This is a label-based comparison, without personal performance scores or guaranteed results.
Product pages and existing offers
These are affiliate links; we may earn a commission from qualifying purchases. Check current labels and checkout terms. Discounts, including any 20% offer or code SHAWTAYYYY7, are subject to eligibility and are not guaranteed.
- Original Bucked Up: compare the linked product or offer details before ordering.
- BAMF: compare the linked product or offer details before ordering.
- larger sample-kit campaign: compare the linked product or offer details before ordering.
- Bucked Up store and current offers
The larger sample-kit campaign is distinct from older three-sample or five-sample advertisements. Confirm current contents, shipping, customer eligibility and optional add-ons on its landing page.
Sources and review notes
Reviewed October 11, 2026. Transparent Labs BULK. BULK Blue Raspberry Supplement Facts. Transparent Labs Bulk Black. Bulk Black Peach Mango Supplement Facts. Transparent Labs LEAN. LEAN Strawberry Lemonade Supplement Facts. Transparent Labs Stim-Free. This is editorial guidance based on identified labels and sources, not a report of personal product testing. Product versions and offers can change.
